I have a casio ex-z750 the camera remains blocked on having transferred files for the port usb to the pc, I have to extract the battery and to return it to put.
It is not a problem of the targeta of memory

Yes, I have had to remove and reinsert my battery to regain power. This has happened a number of times when operating the camera, and laterly downloads to the computer have been getting interrupted and cannot be resumed until I do the battery thing and reinsert the camera in the dock and resume the download. The downloading is the worse problem. I am currently using XP Home on the road. I have not had this happen on my home computer which is running XP pro, but then again, I have not often done long downloads at home. I have no idea what the cause could be. Please let me know if you find out.